3. When 0.118 g of Zn(s) is combined with enough HCl to make 52.3 mL of solution in a coffee-cup calorimeter, all of the zinc reacts, raising the temperature of the solution from 21.8 °C to 24.5°C. Density of soln = 1.03 g/mL Specific heat of soln = 4.07 J/(g°C) a) Is this reaction endothermic or exothermic? b) Calculate the heat for the solution, qsoln. c) Calculate the enthalpy change AH for this reaction in kJ per mole of zinc (kJ/mol).

3. When 0.118 g of Zn(s) is combined with enough HCl to make 52.3 mL of solution in a coffee-cup calorimeter, all of the zinc reacts, raising the temperature of the solution from 21.8 °C to 24.5°C. Density of soln = 1.03 g/mL Specific heat of soln = 4.07 J/(g°C) a) Is this reaction endothermic or exothermic? b) Calculate the heat for the solution, qsoln. c) Calculate the enthalpy change AH for this reaction in kJ per mole of zinc (kJ/mol).

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter7: Chemical Energy

Section: Chapter Questions

Problem 100AE

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